Home / 90,424.02-124,784.52-50,137.78

Finding the Fourth Proportional to 90,424.02, 124,784.52 and 50,137.78

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Solution

The fourth proportional to 90,424.02, 124,784.52 and 50,137.78 is: 69,189.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,424.02 : 124,784.52 = 50,137.78 : x
  2. Step 2: Convert to fraction form
    90,424.02/124,784.52 = 50,137.78/x
  3. Step 3: Cross multiply
    90,424.02x = 124,784.52 × 50,137.78
  4. Step 4: Simplify right side
    90,424.02x = 6,256,418,811.17
  5. Step 5: Solve for x
    x = 6,256,418,811.17/90,424.02
  6. Step 6: Final answer
    x = 69,189.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.